RV620 TV-out

[Sergej Pupykin]

  Hello, All,

I checked
http://www.x.org/wiki/RadeonFeature
and
http://www.x.org/wiki/RadeonFeatureUMS

On both pages TV-out marked as done. But on my card it works only in UMS 
mode. In KMS xrandr always reports

DIN disconnected (normal left inverted right x axis y axis)
         tv standard:    pal
                 supported: ntsc         pal          pal-m        pal-60
                            ntsc-j       scart-pal    pal-cn       secam
         load detection: 1 (0x00000001)  range:  (0,1)

Single difference is in kernel parameters:
(/boot/grub/menu.lst)

title  Arch Linux  [/boot/vmlinuz26]
root   (hd0,0)
kernel /boot/vmlinuz26 
root=/dev/disk/by-uuid/d950a14f-fc0c-451d-b0d4-f95c2adefee3 ro quiet 
radeon.modeset=1
initrd /boot/kernel26.img

title  Arch Linux no modeset [/boot/vmlinuz26]
root   (hd0,0)
kernel /boot/vmlinuz26 
root=/dev/disk/by-uuid/d950a14f-fc0c-451d-b0d4-f95c2adefee3 ro quiet 
radeon.modeset=0 nomodeset
initrd /boot/kernel26.img

Should I report bug, or it is known issue and it is needed to change 
status on wiki?